Silicon carbide powder cleaning device

Abstract

The utility model discloses a kind of silicon carbide powder cleaning devices, and it is related to silicon carbide powder cleaning technical field.Silicon carbide powder cleaning device includes containing assembly and flushing assembly.Containing assembly includes filter container and containing container, filter container includes first cup body and second cup body, first cup body is contained in second cup body, containing container is placed in first cup body, first cup body The inner wall and the outer wall between containing container form first chamber, the outer wall of first cup body and the inner wall of second cup body form second chamber, free silicon in silicon carbide powder and silicon carbide fine powder can overflow to first chamber under the flushing of flushing pipe, carbon powder in silicon carbide powder can overflow to second chamber under the flushing of flushing pipe, second cup body is provided with drain hole.Thus realized that impurity and silicon carbide powder are separated in physical space, avoid impurity re-deposition, improve the cleaning effect for silicon carbide powder.

Description

Technical Field

[0001] This utility model relates to the field of silicon carbide powder cleaning technology, and more specifically, to a silicon carbide powder cleaning device. Background Technology

[0002] Silicon carbide (SiC), as an important wide-bandgap semiconductor material and high-performance ceramic raw material, is widely used in power electronic devices, high-temperature structural components, abrasives, and composite materials. During the preparation of silicon carbide powder, various impurities are typically introduced, including unreacted raw materials (such as silicon and graphite), byproducts (such as free silicon and silica), residual metal catalysts (such as iron, aluminum, and calcium), and environmental dust. The presence of these impurities significantly affects the density, electrical properties, and mechanical strength of the subsequently sintered body. Therefore, silicon carbide powder must undergo efficient and thorough cleaning and purification before entering downstream applications.

[0003] Currently, the main industrial method for cleaning silicon carbide powder is mechanical stirring. However, this method forces all components to mix and disturb, making it difficult for them to naturally separate according to density. Impurities easily re-adhere to or coat the surface of SiC particles, resulting in poor cleaning performance. Utility Model Content

[0004] The purpose of this invention is to provide a silicon carbide powder cleaning device that can improve the cleaning effect of silicon carbide powder.

[0005] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides a silicon carbide powder cleaning device, comprising: A flushing assembly, which includes multiple flushing pipes; The container assembly includes a filter container and a receiving container. The filter container includes a first cup body and a second cup body. The first cup body is housed within the second cup body, and the receiving container is placed within the first cup body. A first chamber is formed between the inner wall of the first cup body and the outer wall of the receiving container. A second chamber is formed between the outer wall of the first cup body and the inner wall of the second cup body. Free silicon and fine silicon carbide powder in the silicon carbide powder can overflow into the first chamber under the flushing of the water pipe, and carbon powder in the silicon carbide powder can overflow into the second chamber under the flushing of the water pipe. The second cup body is provided with a drain hole.

[0006] In an optional embodiment, the rinsing assembly further includes a water outlet pipe having a water inlet, and a plurality of flushing pipes having one end connected to the water outlet pipe and arranged at intervals around the circumference of the container, with a flushing port provided on the outer peripheral wall of the flushing pipe at the end away from the water outlet pipe and / or the end of the flushing pipe at the end away from the water outlet pipe.

[0007] In an optional implementation, there are four flush pipes, which are evenly spaced around the circumference of the container.

[0008] In an alternative embodiment, the container is made of quartz material, and / or the first cup body is made of PVC material.

[0009] In an optional embodiment, the height of the opening end of the accommodating container is greater than the height of the opening end of the first cup body, and the height of the opening end of the first cup body is greater than the height of the opening end of the second cup body.

[0010] In an optional implementation, the accommodating container, the first cup body, and the second cup body are arranged coaxially.

[0011] In an optional embodiment, the bottom wall of the first cup body is provided with a positioning boss, which abuts against the outer peripheral wall of the accommodating container.

[0012] In an optional embodiment, the drain hole of the second cup is located on the bottom wall of the second chamber, and the drain hole is connected to a drain pipe.

[0013] In an optional embodiment, the silicon carbide powder cleaning device further includes a drain assembly located below the filter container and connected to a drain hole, the drain assembly being used to collect the liquid discharged from the drain hole.

[0014] In an optional embodiment, the sewage discharge assembly includes a filter element and a receiving tank. The filter element is installed in the receiving tank and has a sewage guiding surface located below the drain hole. The filter element is used to filter the liquid passing through it. The bottom surface of the receiving tank is also provided with a water guiding slope. The receiving tank has a sewage outlet located below the water guiding slope.

[0015] The beneficial effects provided by this utility model embodiment include: A silicon carbide powder cleaning device provided by this utility model embodiment includes a containing component and a rinsing component. The containing component includes a filter container and a containing container. The filter container includes a first cup body and a second cup body. The first cup body is contained within the second cup body, and the containing container is placed within the first cup body. A first chamber is formed between the inner wall of the first cup body and the outer wall of the containing container, and a second chamber is formed between the outer wall of the first cup body and the inner wall of the second cup body. Free silicon and fine silicon carbide powder in the silicon carbide powder can overflow into the first chamber under the rinsing of the rinsing pipe, and carbon powder in the silicon carbide powder can overflow into the second chamber under the rinsing of the rinsing pipe. The second cup body is provided with a drain hole. This achieves physical spatial separation of impurities and silicon carbide powder, avoids redeposition of impurities, and improves the cleaning effect on silicon carbide powder. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the silicon carbide powder cleaning device provided in an embodiment of the present invention.

[0018] Icons: 1-Silicon carbide powder cleaning device; 100-Rinsing component; 110-Outlet pipe; 120-Flush pipe; 200-Containing component; 210-Containing container; 220-First cup body; 230-Second cup body; 201-First chamber; 202-Second chamber; 240-Drain pipe; 250-Positioning boss; 300-Sewage discharge component; 310-Filter element; 311-Guiding surface; 320-Receiving groove; 321-Water guiding slope. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0025] The following describes in detail, with reference to the accompanying drawings, the specific structure of a silicon carbide powder cleaning device provided by this utility model and its corresponding technical effects.

[0026] Please refer to Figure 1 This utility model provides a silicon carbide powder cleaning device 1, which includes a containing component 200 and a rinsing component 100. The containing component 200 includes a filter container and a containing container 210. The filter container includes a first cup body 220 and a second cup body 230. The first cup body 220 is contained within the second cup body 230, and the containing container 210 is placed within the first cup body 220. A first chamber 201 is formed between the inner wall of the first cup body 220 and the outer wall of the containing container 210. A second chamber 202 is formed between the outer wall of the first cup body 220 and the inner wall of the second cup body 230. Free silicon and fine silicon carbide powder in the silicon carbide powder can overflow into the first chamber 201 under the rinsing of the rinsing water pipe 120, and carbon powder in the silicon carbide powder can overflow into the second chamber 202 under the rinsing of the rinsing water pipe 120. The second cup body 230 is provided with a drain hole.

[0027] Understandably, during the flushing process from the water pipe 120 into the container 210, free silicon and silicon carbide fine powder, due to their slightly higher density than carbon powder but much lower density than SiC, are first detached from the SiC surface under the action of the flushing water flow and rise with the water flow to the first chamber 201. Since the carbon powder has an even lower density, it can further float upwards, passing through the top of the first cup 220 and entering the second chamber 202. SiC particles, due to their high density and rapid settling, are essentially retained within the container 210. Based on the graded overflow mechanism of density and water flow synergistically, physical spatial separation of impurities and silicon carbide powder is achieved, preventing impurity redeposition and significantly improving cleaning purity. Therefore, during the flushing process, once impurities detach from the silicon carbide surface, they are carried away by the water flow and discharged from the container 210, effectively preventing impurity accumulation and recontamination, thereby effectively improving the cleaning effect on the silicon carbide powder.

[0028] Specifically, the flushing assembly also includes a water outlet pipe 110, which has a water inlet. Multiple flushing pipes 120 are connected at one end to the water outlet pipe 110 and are arranged circumferentially around the container 210. Flushing ports are provided on the outer peripheral wall of the flushing pipes 120 away from the water outlet pipe 110. More specifically, multiple flushing ports are provided on the outer peripheral wall of the flushing pipes 120 away from the water outlet pipe 110.

[0029] Because multiple flushing pipes 120 are arranged circumferentially around the container 210, the water flow from the multiple flushing pipes 120 can effectively inject liquid from the outside of the container 210 into the inside. The liquid can penetrate the silicon carbide powder to be cleaned from various angles, thereby improving the cleaning effect on the silicon carbide powder.

[0030] Specifically, in this embodiment, there are four flushing pipes 120, which are evenly spaced around the circumference of the container 210. The four flushing pipes 120 can inject water into the powder layer from the outside in and from the bottom up through multiple flushing nozzles, forming a surrounding flushing field. Combined with the flushing nozzles at the ends and sidewalls of the flushing pipes 120, the water flow can simultaneously penetrate the silicon carbide powder axially and radially, effectively covering the entire container space and ensuring that all parts of the silicon carbide powder are thoroughly flushed, significantly reducing unwashed areas. Moreover, this non-mechanical "hydraulic disturbance" can both loosen the powder agglomerates and avoid the risk of particle breakage caused by mechanical stirring. The impact force of the water flow acts directly on the particle surface, effectively stripping away attached impurities and carrying them into the overflow path for discharge.

[0031] Specifically, the container 210 is made of quartz material, and / or the first cup body is made of PVC material. As is well known, quartz (high-purity silicon dioxide, SiO2) has good chemical inertness and good thermal stability from room temperature to high temperature. Therefore, quartz containers pose a risk of contaminating the powder during the cleaning of silicon carbide powder.

[0032] Polyvinyl chloride (PVC) also has good thermal stability and chemical inertness. Therefore, when cleaning silicon carbide powder, it can effectively ensure the smooth progress of the cleaning process and avoid introducing new impurities during the cleaning of silicon carbide powder.

[0033] Specifically, in this embodiment, the height of the opening end of the accommodating container 210 is greater than the height of the opening end of the first cup body 220, and the height of the opening end of the first cup body 220 is greater than the height of the opening end of the second cup body 230.

[0034] As is easily understood, since the opening of the container 210 is higher than the opening of the first cup 220, when the liquid level rises to the height of the opening of the first cup 220, the supernatant containing impurities preferentially overflows into the first chamber 201 (between the container 210 and the first cup 220); as water continues to be added, the liquid level in the first chamber 201 continues to rise, and when it reaches the height of the opening of the second cup 230 (lower than the opening of the first cup 220), lighter impurities (such as toner) further overflow into the second chamber 202.

[0035] In order to facilitate the relatively uniform dispersion of liquid from the container 210 into the first cup body during rinsing, and the relatively uniform dispersion of liquid overflowing from the first chamber 201 formed by the first cup body and the container 210 into the second container body, in this embodiment, the container 210, the first cup body 220 and the second cup body 230 are coaxially arranged.

[0036] In detail, to ensure that the container 210 is stably placed inside the first cup 220 so that it does not easily shake during rinsing and thus affect the cleaning effect of the silicon carbide powder, in this embodiment, a positioning boss 250 is provided on the bottom wall of the first cup 220, and the positioning boss 250 abuts against the outer peripheral wall of the container 210.

[0037] Understandably, in order to facilitate the smooth discharge of liquid in the second chamber 202, the drain hole of the second cup body 230 is located on the bottom wall of the second chamber 202, and the drain hole is connected to the drain pipe 240. The drain pipe 240 facilitates the discharge of the cleaned wastewater to a place that can receive the wastewater, such as a wastewater collection cylinder.

[0038] In detail, in this embodiment, the silicon carbide powder cleaning device 1 further includes a sewage discharge component 300, which is located below the filter container and connected to the drain hole. The sewage discharge component 300 is used to collect the liquid discharged from the drain hole. This avoids environmental pollution caused by the discharged wastewater.

[0039] Specifically, the sewage discharge assembly 300 includes a filter element 310 and a receiving tank 320. The filter element 310 is installed in the receiving tank 320 and has a sewage guiding surface 311. The sewage guiding surface 311 is located below the drain hole. The filter element 310 is used to filter the liquid passing through it. The bottom surface of the receiving tank 320 is also provided with a water guiding slope 321. The receiving tank 320 has a sewage outlet, which is located on the lower side of the water guiding slope 321.

[0040] The filter element 310 is located in the drainage path and serves as the final interceptor and filter for the discharged liquid, capturing residual solid particles to prevent them from entering the external drain pipe 240 and facilitating subsequent centralized treatment or recycling. The filter element 310 has a wastewater guiding surface 311, which faces directly below the drain hole, efficiently receiving and guiding water flow to prevent splashing, overflow, or flow along the container's outer wall during drainage, thus maintaining the cleanliness of the surrounding environment. Furthermore, the bottom surface of the receiving tank 320 is provided with a water-guiding slope 321, and the sewage outlet is located at the lowest point of the slope, forming a natural gravity drainage channel to facilitate the smooth discharge of wastewater.

[0041] In summary, the silicon carbide powder cleaning device 1 provided by this utility model embodiment includes a containing component 200 and a rinsing component 100. The containing component 200 includes a filter container and a containing container 210. The filter container includes a first cup body 220 and a second cup body 230. The first cup body 220 is contained within the second cup body 230, and the containing container 210 is placed within the first cup body 220. A first chamber 201 is formed between the inner wall of the first cup body 220 and the outer wall of the containing container 210. A second chamber 202 is formed between the outer wall of the first cup body 220 and the inner wall of the second cup body 230. Free silicon and fine silicon carbide powder in the silicon carbide powder can overflow into the first chamber 201 under the rinsing of the rinsing pipe 120, and carbon powder in the silicon carbide powder can overflow into the second chamber 202 under the rinsing of the rinsing pipe 120. The second cup body 230 is provided with a drain hole. This achieves physical spatial separation between impurities and silicon carbide powder, avoids impurity redeposition, and improves the cleaning effect on silicon carbide powder.

[0042] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A silicon carbide powder cleaning device, characterized in that, include: A flushing assembly (100) includes a plurality of flushing pipes (120); The container assembly (200) includes a filter container and a container (210). The filter container includes a first cup (220) and a second cup (230). The first cup (220) is housed in the second cup (230). The container (210) is placed in the first cup (220). A first chamber (201) is formed between the inner wall of the first cup (220) and the outer wall of the container (210). A second chamber (202) is formed between the outer wall of the first cup (220) and the inner wall of the second cup (230). Free silicon and fine silicon carbide powder in the silicon carbide powder can overflow into the first chamber (201) under the flushing of the water pipe (120). Carbon powder in the silicon carbide powder can overflow into the second chamber (202) under the flushing of the water pipe (120). The second cup (230) is provided with a drain hole.

2. The silicon carbide powder cleaning device according to claim 1, characterized in that: The flushing assembly (100) further includes a water outlet pipe (110) having a water inlet. One end of a plurality of flushing pipes (120) is connected to the water outlet pipe (110) and arranged at intervals around the circumference of the accommodating container (210). A flushing port is provided on the outer peripheral wall of the flushing pipe (120) away from the water outlet pipe (110) and / or the end of the flushing pipe (120) away from the water outlet pipe (110).

3. The silicon carbide powder cleaning device according to claim 2, characterized in that: The number of flushing pipes (120) is four, and the four flushing pipes (120) are evenly spaced around the circumference of the container (210).

4. The silicon carbide powder cleaning device according to claim 1, characterized in that: The container (210) is made of quartz material, and / or the first cup body (220) is made of PVC material.

5. The silicon carbide powder cleaning device according to claim 1, characterized in that: The height of the opening end of the container (210) is greater than the height of the opening end of the first cup body (220), and the height of the opening end of the first cup body (220) is greater than the height of the opening end of the second cup body (230).

6. The silicon carbide powder cleaning device according to claim 1, characterized in that: The accommodating container (210), the first cup body (220), and the second cup body (230) are arranged coaxially.

7. The silicon carbide powder cleaning device according to claim 1, characterized in that: The bottom wall of the first cup body (220) is provided with a positioning boss (250), which abuts against the outer peripheral wall of the accommodating container (210).

8. The silicon carbide powder cleaning device according to claim 1, characterized in that: The drain hole of the second cup body (230) is located on the bottom wall of the second chamber (202), and the drain hole is connected to a drain pipe (240).

9. The silicon carbide powder cleaning device according to claim 1, characterized in that: The silicon carbide powder cleaning device also includes a drain assembly (300), which is located below the filter container and connected to the drain hole. The drain assembly (300) is used to receive the liquid discharged from the drain hole.

10. The silicon carbide powder cleaning device according to claim 9, characterized in that: The sewage discharge assembly (300) includes a filter element (310) and a receiving tank (320). The filter element (310) is installed in the receiving tank (320) and has a sewage guiding surface (311). The sewage guiding surface (311) is located below the drain hole. The filter element (310) is used to filter the liquid passing through it. The bottom surface of the receiving tank (320) is also provided with a water guiding slope (321). The receiving tank (320) has a sewage outlet located below the water guiding slope (321).

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